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id="on42tse" class="leftbox clearfix"><h1>電纜用錦湖三元乙丙膠服務(wù)至上上海君宜化工供應(yīng)</h1><div id="b37w2rj" class="proBig"><div id="b7dk8cu" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627876171875/8633044.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="22o3i3y" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627876171875/8633044.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7hdahev" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>電纜用錦湖三元乙丙膠,錦湖</p><p><span>***更新：</span>2021-01-28 09:02:32</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="p8jduwy" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海君宜化工銷售中心（有限合伙）</a></p><p><span>聯(lián)系人：</span>蘇剛</p><p><span>郵箱: </span>sg@estrongchem.com</p><p><span>電話: </span>13524989551</p><p><span>傳真: </span>021_60823996 </p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-60826029</p><p><span>地址: </span>上海市浦東新區(qū)五星路676弄萬科御河10棟</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ke93b9r" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="aodkmta" class="box"><p><p> 8.PDM的成型方式壓出膠料壓出性能往往是以膠料容易輸送、壓出速度快、壓出物表面光滑以及形狀、尺寸保持性好為標(biāo)志。三元乙丙橡膠比一般橡膠容易壓出，壓出速度較快，壓出物收縮小，但要控制好膠料的門尼粘度和壓出溫度。乙丙橡膠膠料門尼粘度以40~60為佳。乙烯含量高及分子量分布窄的三元乙丙橡膠壓出工藝性能好。高填充配合的膠料亦有良好的壓出性能，特別是填充高結(jié)構(gòu)爐黑，電纜用錦湖三元乙丙膠、快壓出爐黑、通用爐黑、半補(bǔ)強(qiáng)爐黑、中粒子熱裂法炭黑和細(xì)粒子熱裂法炭黑等炭黑的膠料壓出表面光滑。白色填料以鈦白、滑石粉、碳酸鈣為比較好，壓出速度超過炭黑膠料。壓延EPDM膠料需要通過壓延制備各種規(guī)格膠片以及在織物上擦膠或貼膠。膠料門尼粘度、壓延速度和溫度均會影響壓延物質(zhì)量。壓延溫度過低容易產(chǎn)生氣泡，壓延物不平整，收縮大。一般壓延溫度應(yīng)控制如下：上輥90~100℃，中輥90℃左右，電纜用錦湖三元乙丙膠，下輥90~120℃。模壓三元乙丙橡膠高溫流動性較好，電纜用錦湖三元乙丙膠，故制造模壓制品時(shí)沒有什么困難。但制造結(jié)構(gòu)復(fù)雜的模制品時(shí)，要在模型關(guān)鍵部位鉆些氣眼以排出窩藏的氣體，避免制品產(chǎn)生氣孔缺點(diǎn)或表面發(fā)粘等。用過氧化物硫化的膠料熱撕裂性能差，配方中應(yīng)采用少量硫磺作共交聯(lián)劑以改善其熱撕裂性能。三元乙丙中*****使用的是ENB，它比DCPD產(chǎn)品硫化要快得多。電纜用錦湖三元乙丙膠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="電纜用錦湖三元乙丙膠,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627876171875/8633044.jpg"></div><p> EPDM配方設(shè)計(jì)的方法 </p> <p> a.關(guān)于村科的種類 </p> <p> 此概念的基礎(chǔ)上采取添加所需材料的方法。追求“簡單的就是比較好的"這排除計(jì)量失誤發(fā)生的可能性，材料的種類是越少越好。為便于在場進(jìn)行原材料管理，以由于近來各材料生產(chǎn)商都在不斷地開發(fā)新材料，村料也就在所難免。因此使用橡膠產(chǎn)品要求性能上年然而，在不能準(zhǔn)確把任何時(shí)候添加材料，都可能成為泄漏、起霜等負(fù)面因素。把握村料效果的情況下，比較好不要盲目地河地添加材料。 </p> <p> 漫合設(shè)計(jì)時(shí)適宜的材料種類 </p> <p> 聚合體3種以下 </p> <p> 碳/黑 2種以下 </p> <p> 填充物 2種以下 </p> <p> 軟化劑可塑劑 2種以下 </p> <p> 加工助劑 2種以下 </p> <p> 抗老化劑 2種以下 </p> <p> 促進(jìn)劑(丁晴橡膠混合) 3種以下 </p> <p> 促進(jìn)劑(三元乙丙橡膠般混合) 4種以下 </p> <p> b.關(guān)于材料的添加量 </p> <p> “比較低添加量比較好為0.2phr以上”其理由在于，在現(xiàn)場使用大型機(jī)械進(jìn)行混煉操作時(shí)，經(jīng)常發(fā)生分散不充分的情況并且如添加量少，將會發(fā)生分散不均勻的現(xiàn)象。 </p> <p> 如果不得已要添加0.1phr以下的量時(shí)，需要事先完全與材料混合，使?jié)舛冉档?，此外，氧化鋅的比重為5.6左右時(shí)，雖然重量份數(shù)為5Phr.但容量份數(shù)為0.891通常添加量不需要5Phr,比較好是添加3Phr以上，在進(jìn)行硫化過程中，當(dāng)內(nèi)模被行財(cái)，可以考慮混合少量的氧化鋅，但這時(shí)比較好添加活性氧化鋅活性氧化鋅)。錦湖KUMHO耐熱EPDM三元乙丙是乙烯、丙烯和非共軛二烯烴的三元共聚物。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="電纜用錦湖三元乙丙膠,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000839581671305/6370008395816713052558776.JPG"></div><p> EPDM的黏合一： </p> <p> 在橡膠制品生產(chǎn)過程中，黏合是一個(gè)很重要的課題。它包括橡膠與橡膠、橡膠與金屬和橡膠與纖維織物等之間黏合。乙丙橡膠由于表面缺乏活性，與其它材料粘合困難，尤其是一些在高溫、高負(fù)荷動態(tài)狀態(tài)下使用的制品如汽車傳動帶、空氣彈簧等用常規(guī)的粘合處理方法如ＲＦＬ和“間甲白”直黏體系等，很難達(dá)到滿意的黏合效果，需用特殊或幾種方法配合使用。 </p> <p> ＥＰＤＭ與纖維織物黏合中，纖維表面處理用ＲＦＬ浸漬液中的膠乳一般使用ＣＳＭ、ＢＲ和ＥＰＤＭ等，這在一般靜態(tài)使用的橡膠制品尚可，但高動態(tài)使用時(shí)，其黏合強(qiáng)度顯得不足，解決辦法有：①用特殊膠乳。用高反應(yīng)性的馬來酸酐聚二丁烯膠乳處理，可**提高尼龍、聚酯和芳綸等纖維與ＥＰＤＭ黏合強(qiáng)度。 </p><p> 2.PDM第三單體的選擇第三二烯烴類型的單體是通過乙烯和丙烯的共聚，在聚合物中產(chǎn)生不飽和，以便實(shí)現(xiàn)硫化。第三單體的選擇必須滿足以下要求：**多兩鍵：一個(gè)可聚合，一個(gè)可硫化反應(yīng)類似于兩種基本的單體主鍵隨機(jī)聚合產(chǎn)生均勻分布足夠的揮發(fā)性，便于從聚合物中除去**終聚合物硫化速度合適目前工業(yè)化生產(chǎn)三元乙丙橡膠用第三單體只有如下三種：乙叉降冰片烯（ENB）雙環(huán)戊二烯（DCPD）1，4-己二烯（HD）三元乙丙生產(chǎn)中主要是用ENB和DCPD。三元乙丙中*****使用的是ENB，它比DCPD產(chǎn)品硫化要快得多。在相同的聚合條件下，第三單體的本質(zhì)影響著長鏈支化，按以下順序遞增：EPM<EPDM(ENB)<EPDM(DCPD)三元乙丙其他的受二烯烴第三單體影響的還有：ENB－快速硫化，高拉伸強(qiáng)度，低長久形變DCPD－防焦性，低長久應(yīng)變，低成本隨著二烯烴第三單體的增加，將會有下列影響發(fā)生：更快硫化率，更低的壓縮形變，高定伸，促進(jìn)劑選擇的多樣性，減少的防焦性和延展，更高的聚合物成本。三元乙丙橡膠的門尼粘度可以反映其分子量的大小，三元乙丙橡膠的門尼粘度范圍通常在20到100之間。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="電纜用錦湖三元乙丙膠,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000898261521918/6370008982615219187889478.JPG"></div><p> EPDM汽車傳動帶中的應(yīng)用 </p> <p> 近年來，多楔帶在汽車得到普遍應(yīng)用，而發(fā)動機(jī)室的溫度越來越高，有的要求橡膠件能耐１５０℃，瞬間能耐１７０℃．，傳統(tǒng)氯丁橡膠（ＣＲ）顯然達(dá)不到要求。由于ＨＮＢＲ過于昂貴，人們在研究發(fā)現(xiàn)小量的油污并不對發(fā)動機(jī)前端的皮帶造成損害，可使用較廉價(jià)耐熱性好多的三元乙丙橡膠（ＥＰＤＭ）作為多楔帶主體橡膠材料。但ＥＰＤＭ耐磨性、高溫抗撕裂和動態(tài)性能不理想，與其它材料粘合差，這些都需要通過改性如添加ＺＤＡ或ＺＤＭＡ和與其它材料并用加以解決。 </p> <p> 汽車Ｖ帶一般用綜合性能優(yōu)異的ＣＲ制造，近年來與上述ＥＰＤＭ多楔帶同樣的原因，開始用ＥＰＤＭ生產(chǎn)。但汽車Ｖ帶傳動受力機(jī)理與多楔帶有很大不同，對壓縮膠的耐曲撓、耐磨性，抗拉體線繩、織物的黏合性以及帶的橫向剛性比多楔帶有更高的要求。ＧＡＴＥＳ公司推出的ＦｌｅｅｔＲｕｎｎｅｒ汽車Ｖ帶（在中國稱為ＥＸＰｏｗｅｒ），據(jù)報(bào)道實(shí)際使用壽命能達(dá)到４０００００km以上其它性能也優(yōu)于ＣＲ汽車Ｖ帶，尤其是耐高低溫性能，可在-５５~１２０℃正常使用，做到全天候使用。 EPDM與NBR分子極性差別很大，相容性很差，共混時(shí)需要添加相容劑提高二者的相容性。電纜用錦湖三元乙丙膠</p><p style="text-indent:25px">過氧化物常用交聯(lián)助劑有:烯丙基化合物(TAC和TAIC等),DTDM,HVA-2等。電纜用錦湖三元乙丙膠</p><p> 8. EPDM的塑煉與混煉 </p> <p> 塑煉?：EPDM的塑煉效果差，不象天然橡膠和丁苯橡膠那么易于塑煉。門尼粘度高的三元乙丙橡膠塑煉時(shí)，由于分子鏈斷裂，門尼粘度有所下降。低門尼枯度的乙丙橡膠，只是在塑煉初期門尼粘度稍有下降。因此三元乙丙橡膠不象天然橡膠那樣需要專門進(jìn)行塑拉，只是在混煉前先將三元乙丙橡膠在低溫下稍薄通即可。 </p> <p> 混煉? ：EPDM可采用開煉機(jī)和密煉機(jī)混煉。但用密煉機(jī)混煉填充劑分散效果更好。 </p> <p> 開煉機(jī)混煉 </p> <p> 由于三元乙丙橡膠塑煉效果差，缺乏粘著性，不易“ 吃” 炭黑，不宜包輥。故用開煉機(jī)混煉時(shí)應(yīng)注意以下幾點(diǎn)： </p> <p> 1 ）門尼粘度低的可以用開煉機(jī)混煉，門尼粘度高的用開煉機(jī)混煉比較困難； </p> <p> 2）混煉開始時(shí)采用窄輥尾，先將生膠薄通 1 0 次左右，使其形成連續(xù)的包輥膠后再放寬輥距進(jìn)行加料混煉； </p> <p> 3）輥溫應(yīng)控制在 60℃左右，前輥溫度稍低于后輥； </p> <p> 4）混煉高填充油和高填充劑的膠料時(shí)，可將油和填充劑先混合后再加到膠料 </p> <p> 中去，以改善混煉操作。 </p> <p> 密煉機(jī)混煉 </p> <p> EPDM 密煉機(jī)混煉應(yīng)注意以下幾點(diǎn)： </p> <p> 1 ）容量應(yīng)比正常容量高 15%左右； </p> <p> 2）溫度要高些，以利于乙丙橡膠在高溫下塑化，從而使配合劑易于分散均勻； </p> <p> 3）填充劑用量高的膠料宜采用逆混法，填充劑用量低的膠料用一般混煉法較好。電纜用錦湖三元乙丙膠</p><p style="text-indent:25px">上海君宜化工銷售中心（有限合伙）是一家有著雄厚實(shí)力背景、信譽(yù)可靠、勵精圖治、展望未來、有夢想有目標(biāo)，有組織有體系的公司，堅(jiān)持于帶領(lǐng)員工在未來的道路上大放光明，攜手共畫藍(lán)圖，在上海市市轄區(qū)等地區(qū)的橡塑行業(yè)中積累了大批忠誠的客戶粉絲源，也收獲了良好的用戶口碑，為公司的發(fā)展奠定的良好的行業(yè)基礎(chǔ)，也希望未來公司能成為行業(yè)的翹楚，努力為行業(yè)領(lǐng)域的發(fā)展奉獻(xiàn)出自己的一份力量，我們相信精益求精的工作態(tài)度和不斷的完善創(chuàng)新理念以及自強(qiáng)不息，斗志昂揚(yáng)的的企業(yè)精神將引領(lǐng)上海君宜化工和您一起攜手步入輝煌，共創(chuàng)佳績，一直以來，公司貫徹執(zhí)行科學(xué)管理、創(chuàng)新發(fā)展、誠實(shí)守信的方針，員工精誠努力，協(xié)同奮取，以品質(zhì)、服務(wù)來贏得市場，我們一直在路上！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3047685.html</p></div></div></div></div></div><div id="x23ng33" class="page-right twoColRt"><div id="tsr2b4u" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3gi73b7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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